Flush hinge.



PATENTED NO'V. 6, 1906.

J. G. SCHMIDT'. FLUSH HINGE. uru'oulox FILED Jun 14,1sos.

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UNITED sTATEs PATENT OEEIOE.

JOHN GUsTAvE SMDI, NEW JERSEY. l, i

' FLUSH HINGE. A'

Specification of Letters Patent.

Patented Nov. 6,1906.

Application filed June 14, 1905. Serial No. 265.294.

To 'all whom it may concern:

Be it known `that I, JOHN GUsTAvE SCHMIDT, a citizen of the United States, and a resident of Lodi, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Flush Hinges, of which the following is a specification.

The object of my invention is to provide a flush hin e for sidewalk, cellar, and trap-doors that is ofg simple, strong, and cheap construction.

My invention is shown in the accompanying drawings, in which- Figure 1 is a perspective view of the'hinge applied to a sidewal -door, showing the door c osed. Fig. 2 is a view of the same showing the door open. Fig. 34 is a vertical section through the casing and frame. Fig. 4 is a sectional view of the same on the line x in the direction of the arrow A. Fig.' 5 is a top view of the casing, and Fig. 6 is a vertical section of the hinge modified to allow the door to overlap the frame.

The construction and operation of my invention are as follows: The frame for a sidewalkdoor is made by securing together pieces of angle-iron 10 10. To the upper surfaces of the angle-irons are secured by bolts or rivets the plates 11 12. Theinner edge of the plate 11 is beveled, as shown'at 11a. This frame is secured within the opening in the sidewalk. If the sidewalk'is made the angle iron and plate by the bolts 21 and v n of cement, ieces of channel-iron, as' 13, are riveted to tfie angle-irons 10 10, so that when cement is flowed around the outside of the frame these pieces, embedded in the cement, hold the frame more securely in position.

Slots 14 15 are cut out of the angle-iron 10 and the plate 11 of sufficient size to allow for y 22, the pin is held securely in place. The sides of the casings prevent cement from flowing i'nto the spaces needed for the swing ofthe lever ends. When the door is open, as in Fig. 2, the point c of the lever rests against the angle-iron 10, and the point n rests upon the plate 11. When the door is closed,.its edges rest upon the angle-iron of the frame.

This construction relieves the pins of unnecessary strains. The hole to drain from the casing.

In the modification shown in Fig. 6 the edge of the door 23 overlaps the angle-iron, and as the plate is omitted the lever 24 is l20 permits water made 'flush with the topof the angle-iron frame. The casing 26 is bolted to the angleiron and has an inclined bottom for drainage.

What I claim, and desire to secure by Letters Patent, is-

' 1. vThe combination of a door-frame provided with a slot, 15, a casing, 20, bolted to 2. In a flush hinge, the combination of alever pivoted within a slot in a door-frame and providedwith the bearing-points n and c, a casing inclosing the said slot on one side and provided with the open bearings 2Oa and casing to the frame after the door and frame are in place. a p

3. In a flushhinge, the combination of a lever pivoted within a slot lin a door-frame, a

20", a pivot-pin, and means for bolting the` casing inclosing oneI side of said slot and pro-44 l vided with the bearings 20tl andr 20b and a drainage-hole 20C, a pivot-pin, and means for bolting thercasing to Lthe frame after the door and frame are in place.

Signed at New York, in the county of New York, and State of New York, this 8th day of June, A. I). 1905.

JOI-IN GUSTAV SCHMIDT.

Witnesses:

LOUIS BRANDT, EDW. G. COX. 

